Indexed book



UNITED STATES PATENT @rrron.

EDWIN T. DOUGLASS, OF BROOKLYN, NEWV YORK.

INDEXED BOOK.

SPECIFICATION forming part of Letters Patent No. 472,441, dated April 5,1892.

Application filed October 16, 1888- Serial No. 288,217. (No model.)

To LtZZ whom, it may concern:

Be it known that I, EDWIN T. DOUGLASS, a resident of Brooklyn, in thecounty of Kings and State of New York, have invented certain new anduseful Improvements in Indexing; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse the same.

My invention relates to improvements in indexing books for memoranda;and the object sought is to enable the individual to observe amemorandum pertaining to a corresponding day for every calendar month inthe year by one act of reference, all the indications of a greaterdenomination of time appearing simultaneously under the head of any onelesser denomination, the latter being used solely as the key ofreference.

To this end my invention consists in a memorandum-book constructed asfully described herein, and pointed out in the appended claims.

Referring to the accompanying drawings, Figure 1 is a perspective viewof an open book provided with my improvements. Fig. 2 is a similar viewshowing a slight modification in arrangement.

In Fig. 1 the bookis shown as having a marginal index arranged in theusual manner and bearing upon the successive tabs or offsets the numbersin their natural order from 1 to 31, inclusive, corresponding to thegreatest number of days in a calendar month. By using the index the bookmay be opened to the page upon which any one of these numbers is placed,and upon this and the opposite page thus exposed the names of the cal=endar months are arranged in order, so as to divide the two pages intotwelve equal spaces, each headed by the name of a month, as shown inFig.1, where the book is opened to the page upon which the indexfigure lis placed. This being done for each of the numbers throughout the book,all entries for, as an example, the first of any month are written underthe name of that month upon the two pages exposed by opening at the pageupon which the figure 1 of the index is placed, and in like manner allentries for corresponding days of the twelve months are made upon afolio by themselves.

The space is in books of ordinary size sufficient for many briefmemoranda of, for example, business or other engagements that it isdesirable to call to mind upon a particular date; but if in any case thesubject-matter be deemed insu'lficient the latter may be entered in itsproper place to call the matter to mind, and additional notes may beplaced upon one or more leaves intervening between this and the nextsucceding folio exposed by opening the book at the next number in theindex.

In Fig. 2 there is shown the modification of placing only the first sixmonths of the year upon the pages exposed in opening the book, as aboveset forth, the remainder of the names being placed upon following pages,collectively forming a group.

It is evident that with the use of but a single index the book may bereadily opened to any date, and that it serves the purpose of the commondaily memorandum-calendar for the desk, and at the same time isconveniently carried in the pocket when of medium size.

Having now fully shown and explained my invention, what I claim is 1. Adiary or book provided with a single visible index bearing the lesserdenomination of time and having repeated designations of the greaterdenomination of time within the book corresponding with each said lesserand visible denomination.

2. A memorandum-book provided with a single day-index visible when thebook is closed and repeated month designations within the book, arrangedin independent and complete series for each day-indication.

3. A book in which the month designations are invisible when the book isclosed, having a single visible consecutive-number index correspondingto the days of the month, each number referring to pages or groupsthereof within the book, subdivided by calendarmonth designationsrepresenting a complete year for each said page or group.

at. A book provided with a single marginal separate pages or groups ofpages, and sul index bearing numbers corresponding to the divisions ofeach said page or group into days of the mouth, consecutively placed onspaces for memoranda designated by the I 5 the exposed portions ofsuccessive leaves or names of the twelve calendar months, for the 5groups thereof, and the names of calendar purpose set forth.

months, each designating a space for memo- In testimony whereof I havesigned this randa arranged Within said leaf or groups in specificationin the presence of two subscribindependcnt series, pertaining to eachsingle ing Witnesses.

index-number. l EDWIN T. DOUGLASS. 1o 5. A book provided with a singlemarginal lVitnesses:

reference index comprising substantially SCHUYLER DURYEE,

thirty-one numbers referring, respectively, to H. S. ROHRER.

